INFICON Stripe CDG100Dhs 0.1 ... 1000Torr / mbar - Manual (Page 27)

tina95e1 (2014-07) 27
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Briefly press the <ZERO> button with a pin (max.
ø1.1 mm). The zero adjustment runs automatically. The
<STATUS> LED blinks until the adjustment (duration ≤8 s)
is completed.
max. ø1.1 mm
Press the
button briefly
After zero adjustment, the gauge automatically returns
to the measurement mode.
The <STATUS> LED blinks green if
• the signal output is negative (< -20 mV) when the final pres-
sure has been attained
• the zero adjustment has failed.
4.2.2
<ZERO> Adjustment with Ramp Function
The ramp function allows to adjust the pressure value at a
known reference pressure within the measurement range of the
gauge.
It also permits to adjust an offset of the characteristic curve in
order to
• compensate for the offset of the measuring system or
• obtain a slightly positive zero for a 0 … 10 V AD converter.
The offset should not exceed 5% of the F.S. (+500 mV). At a
higher positive offset, the upper limit of the measurement range
is exceeded.